Name Size Creator Creation Date Labels Comment  
PDF File 1937118.pdf 1.01 MB Shaun Ewing Nov 28, 1933 00:00
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US-1937118-A // Projecting pictures in stereoscopic relief // Ives Herbert E. // Bell Telephone Labor Inc
PDF File 1937115.pdf 436 kB Shaun Ewing Nov 28, 1933 00:00
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US-1937115-A // Testing machine // Hayford Walter S. ; Townsend John R. // Bell Telephone Labor Inc
PDF File 1936686.pdf 414 kB Shaun Ewing Nov 28, 1933 00:00
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US-1936686-A // Sound recording material and method of manufacture // Patterson Everett M. // Bell Telephone Labor Inc
PDF File 1936683.pdf 408 kB Shaun Ewing Nov 28, 1933 00:00
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US-1936683-A // Frequency measurement // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 1936658.pdf 857 kB Shaun Ewing Nov 28, 1933 00:00
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US-1936658-A // Volume control system // Bjornson Bjorn G. ; Jr. Stephen Doba, // Bell Telephone Labor Inc
PDF File 1936656.pdf 909 kB Shaun Ewing Nov 28, 1933 00:00
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US-1936656-A // Printing telegraph system // Bell John H. // Bell Telephone Labor Inc
PDF File 1936655.pdf 701 kB Shaun Ewing Nov 28, 1933 00:00
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US-1936655-A // Telegraph system // Bell John H. // Bell Telephone Labor Inc
PDF File 1936200.pdf 1.38 MB Shaun Ewing Nov 21, 1933 00:00
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US-1936200-A // Telegraph exchange system // Locke George A. ; Lane Cuthbert C. // Bell Telephone Labor Inc
PDF File 1936194.pdf 463 kB Shaun Ewing Nov 21, 1933 00:00
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US-1936194-A // Gas pressure alarm contactor // Henneberger Thomas C. ; Pike Vernon B. // American Telephone & Telegraph ; Bell Telephone Labor Inc
PDF File 1936187.pdf 679 kB Shaun Ewing Nov 21, 1933 00:00
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US-1936187-A // Electron discharge device // Denzler Arthur H. // Bell Telephone Labor Inc
PDF File 1936153.pdf 1.17 MB Shaun Ewing Nov 21, 1933 00:00
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US-1936153-A // Electric wave transmission system // Burton Everett T. // Bell Telephone Labor Inc
PDF File 1936145.pdf 442 kB Shaun Ewing Nov 21, 1933 00:00
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US-1936145-A // Sound reproducing system // Wente Edward C. // Bell Telephone Labor Inc
PDF File 1935325.pdf 826 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935325-A // Frequency standard // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 1935323.pdf 241 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935323-A // Underground cable // Kemp Archie R. ; Ingmanson John H. // Bell Telephone Labor Inc
PDF File 1935322.pdf 211 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935322-A // Lead covered cable // Kemp Archie R. // Bell Telephone Labor Inc
PDF File 1935321.pdf 523 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935321-A // Gutta-percha insulation material // Kemp Archie R. ; Ingmanson John H. // Bell Telephone Labor Inc
PDF File 1935316.pdf 582 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935316-A // Detector // Galt Rogers H. // Bell Telephone Labor Inc
PDF File 1935301.pdf 724 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935301-A // Sound reproducing system // Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 1935300.pdf 683 kB Shaun Ewing Nov 14, 1933 00:00
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US-1935300-A // Sound reproducing system // Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 1934423.pdf 901 kB Shaun Ewing Nov 07, 1933 00:00
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US-1934423-A // System for communicating with moving vehicles // Green Charles W. // Bell Telephone Labor Inc
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